-4(4+3r)=-100

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Solution for -4(4+3r)=-100 equation: 



-4(4+3r)=-100

We move all terms to the left:

-4(4+3r)-(-100)=0

We add all the numbers together, and all the variables

-4(3r+4)-(-100)=0

We add all the numbers together, and all the variables

-4(3r+4)+100=0

We multiply parentheses

-12r-16+100=0

We add all the numbers together, and all the variables

-12r+84=0

We move all terms containing r to the left, all other terms to the right

-12r=-84

r=-84/-12

r=+7

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